Home / 42,752.70-64,130.16-20,258.13

Finding the Fourth Proportional to 42,752.70, 64,130.16 and 20,258.13

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Solution

The fourth proportional to 42,752.70, 64,130.16 and 20,258.13 is: 30,387.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,752.70 : 64,130.16 = 20,258.13 : x
  2. Step 2: Convert to fraction form
    42,752.70/64,130.16 = 20,258.13/x
  3. Step 3: Cross multiply
    42,752.70x = 64,130.16 × 20,258.13
  4. Step 4: Simplify right side
    42,752.70x = 1,299,157,118.20
  5. Step 5: Solve for x
    x = 1,299,157,118.20/42,752.70
  6. Step 6: Final answer
    x = 30,387.72

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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.