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Finding the Fourth Proportional to 56,349.48, 77,679.48 and 42,897.30

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Solution

The fourth proportional to 56,349.48, 77,679.48 and 42,897.30 is: 59,135.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,349.48 : 77,679.48 = 42,897.30 : x
  2. Step 2: Convert to fraction form
    56,349.48/77,679.48 = 42,897.30/x
  3. Step 3: Cross multiply
    56,349.48x = 77,679.48 × 42,897.30
  4. Step 4: Simplify right side
    56,349.48x = 3,332,239,957.40
  5. Step 5: Solve for x
    x = 3,332,239,957.40/56,349.48
  6. Step 6: Final answer
    x = 59,135.24

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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.