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Finding the Fourth Proportional to 72,951.84, 100,681.29 and 42,762.53

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Solution

The fourth proportional to 72,951.84, 100,681.29 and 42,762.53 is: 59,016.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,951.84 : 100,681.29 = 42,762.53 : x
  2. Step 2: Convert to fraction form
    72,951.84/100,681.29 = 42,762.53/x
  3. Step 3: Cross multiply
    72,951.84x = 100,681.29 × 42,762.53
  4. Step 4: Simplify right side
    72,951.84x = 4,305,386,935.77
  5. Step 5: Solve for x
    x = 4,305,386,935.77/72,951.84
  6. Step 6: Final answer
    x = 59,016.84

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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.