Home / 89,392.10-134,117.28-42,638.90

Finding the Fourth Proportional to 89,392.10, 134,117.28 and 42,638.90

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Solution

The fourth proportional to 89,392.10, 134,117.28 and 42,638.90 is: 63,972.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,392.10 : 134,117.28 = 42,638.90 : x
  2. Step 2: Convert to fraction form
    89,392.10/134,117.28 = 42,638.90/x
  3. Step 3: Cross multiply
    89,392.10x = 134,117.28 × 42,638.90
  4. Step 4: Simplify right side
    89,392.10x = 5,718,613,290.19
  5. Step 5: Solve for x
    x = 5,718,613,290.19/89,392.10
  6. Step 6: Final answer
    x = 63,972.24

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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.