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Finding the Fourth Proportional to 72,547.29, 100,125.03 and 40,717.93

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Solution

The fourth proportional to 72,547.29, 100,125.03 and 40,717.93 is: 56,196.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,547.29 : 100,125.03 = 40,717.93 : x
  2. Step 2: Convert to fraction form
    72,547.29/100,125.03 = 40,717.93/x
  3. Step 3: Cross multiply
    72,547.29x = 100,125.03 × 40,717.93
  4. Step 4: Simplify right side
    72,547.29x = 4,076,883,962.79
  5. Step 5: Solve for x
    x = 4,076,883,962.79/72,547.29
  6. Step 6: Final answer
    x = 56,196.23

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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.