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Finding the Fourth Proportional to 42,710.70, 64,114.65 and 25,190.40

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Solution

The fourth proportional to 42,710.70, 64,114.65 and 25,190.40 is: 37,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,710.70 : 64,114.65 = 25,190.40 : x
  2. Step 2: Convert to fraction form
    42,710.70/64,114.65 = 25,190.40/x
  3. Step 3: Cross multiply
    42,710.70x = 64,114.65 × 25,190.40
  4. Step 4: Simplify right side
    42,710.70x = 1,615,073,679.36
  5. Step 5: Solve for x
    x = 1,615,073,679.36/42,710.70
  6. Step 6: Final answer
    x = 37,814.26

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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.