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Finding the Fourth Proportional to 65,377.70, 90,191.31 and 42,710.66

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Solution

The fourth proportional to 65,377.70, 90,191.31 and 42,710.66 is: 58,921.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,377.70 : 90,191.31 = 42,710.66 : x
  2. Step 2: Convert to fraction form
    65,377.70/90,191.31 = 42,710.66/x
  3. Step 3: Cross multiply
    65,377.70x = 90,191.31 × 42,710.66
  4. Step 4: Simplify right side
    65,377.70x = 3,852,130,376.36
  5. Step 5: Solve for x
    x = 3,852,130,376.36/65,377.70
  6. Step 6: Final answer
    x = 58,921.17

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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.