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Finding the Fourth Proportional to 77,897.80, 116,976.30 and 42,862.60

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Solution

The fourth proportional to 77,897.80, 116,976.30 and 42,862.60 is: 64,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,897.80 : 116,976.30 = 42,862.60 : x
  2. Step 2: Convert to fraction form
    77,897.80/116,976.30 = 42,862.60/x
  3. Step 3: Cross multiply
    77,897.80x = 116,976.30 × 42,862.60
  4. Step 4: Simplify right side
    77,897.80x = 5,013,908,356.38
  5. Step 5: Solve for x
    x = 5,013,908,356.38/77,897.80
  6. Step 6: Final answer
    x = 64,365.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.