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Finding the Fourth Proportional to 84,377.50, 116,320.76 and 57,485.60

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Solution

The fourth proportional to 84,377.50, 116,320.76 and 57,485.60 is: 79,248.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,377.50 : 116,320.76 = 57,485.60 : x
  2. Step 2: Convert to fraction form
    84,377.50/116,320.76 = 57,485.60/x
  3. Step 3: Cross multiply
    84,377.50x = 116,320.76 × 57,485.60
  4. Step 4: Simplify right side
    84,377.50x = 6,686,768,463.80
  5. Step 5: Solve for x
    x = 6,686,768,463.80/84,377.50
  6. Step 6: Final answer
    x = 79,248.24

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1.5x scale

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.