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Finding the Fourth Proportional to 60,699.20, 91,048.80 and 60,310.40

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Solution

The fourth proportional to 60,699.20, 91,048.80 and 60,310.40 is: 90,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,699.20 : 91,048.80 = 60,310.40 : x
  2. Step 2: Convert to fraction form
    60,699.20/91,048.80 = 60,310.40/x
  3. Step 3: Cross multiply
    60,699.20x = 91,048.80 × 60,310.40
  4. Step 4: Simplify right side
    60,699.20x = 5,491,189,547.52
  5. Step 5: Solve for x
    x = 5,491,189,547.52/60,699.20
  6. Step 6: Final answer
    x = 90,465.60

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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.