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Finding the Fourth Proportional to 91,957.58, 126,897.41 and 53,720.67

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Solution

The fourth proportional to 91,957.58, 126,897.41 and 53,720.67 is: 74,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,957.58 : 126,897.41 = 53,720.67 : x
  2. Step 2: Convert to fraction form
    91,957.58/126,897.41 = 53,720.67/x
  3. Step 3: Cross multiply
    91,957.58x = 126,897.41 × 53,720.67
  4. Step 4: Simplify right side
    91,957.58x = 6,817,013,886.46
  5. Step 5: Solve for x
    x = 6,817,013,886.46/91,957.58
  6. Step 6: Final answer
    x = 74,132.16

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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.