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Finding the Fourth Proportional to 60,663,919.80, 90,995,879.70 and 40,256,585.40

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Solution

The fourth proportional to 60,663,919.80, 90,995,879.70 and 40,256,585.40 is: 60,384,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,663,919.80 : 90,995,879.70 = 40,256,585.40 : x
  2. Step 2: Convert to fraction form
    60,663,919.80/90,995,879.70 = 40,256,585.40/x
  3. Step 3: Cross multiply
    60,663,919.80x = 90,995,879.70 × 40,256,585.40
  4. Step 4: Simplify right side
    60,663,919.80x = 3,663,183,402,191,176.50
  5. Step 5: Solve for x
    x = 3,663,183,402,191,176.50/60,663,919.80
  6. Step 6: Final answer
    x = 60,384,878.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.