Home / 65,432.32-90,294.40-38,574.36

Finding the Fourth Proportional to 65,432.32, 90,294.40 and 38,574.36

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Solution

The fourth proportional to 65,432.32, 90,294.40 and 38,574.36 is: 53,231.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,432.32 : 90,294.40 = 38,574.36 : x
  2. Step 2: Convert to fraction form
    65,432.32/90,294.40 = 38,574.36/x
  3. Step 3: Cross multiply
    65,432.32x = 90,294.40 × 38,574.36
  4. Step 4: Simplify right side
    65,432.32x = 3,483,048,691.58
  5. Step 5: Solve for x
    x = 3,483,048,691.58/65,432.32
  6. Step 6: Final answer
    x = 53,231.32

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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.