Home / 55,631.12-76,730.28-40,528.40

Finding the Fourth Proportional to 55,631.12, 76,730.28 and 40,528.40

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Solution

The fourth proportional to 55,631.12, 76,730.28 and 40,528.40 is: 55,899.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,631.12 : 76,730.28 = 40,528.40 : x
  2. Step 2: Convert to fraction form
    55,631.12/76,730.28 = 40,528.40/x
  3. Step 3: Cross multiply
    55,631.12x = 76,730.28 × 40,528.40
  4. Step 4: Simplify right side
    55,631.12x = 3,109,755,479.95
  5. Step 5: Solve for x
    x = 3,109,755,479.95/55,631.12
  6. Step 6: Final answer
    x = 55,899.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.