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Finding the Fourth Proportional to 63,430.91, 87,492.49 and 40,798.53

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Solution

The fourth proportional to 63,430.91, 87,492.49 and 40,798.53 is: 56,274.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,430.91 : 87,492.49 = 40,798.53 : x
  2. Step 2: Convert to fraction form
    63,430.91/87,492.49 = 40,798.53/x
  3. Step 3: Cross multiply
    63,430.91x = 87,492.49 × 40,798.53
  4. Step 4: Simplify right side
    63,430.91x = 3,569,564,876.04
  5. Step 5: Solve for x
    x = 3,569,564,876.04/63,430.91
  6. Step 6: Final answer
    x = 56,274.85

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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.