Home / 87,314.40-130,885.20-42,904.80

Finding the Fourth Proportional to 87,314.40, 130,885.20 and 42,904.80

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Solution

The fourth proportional to 87,314.40, 130,885.20 and 42,904.80 is: 64,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,314.40 : 130,885.20 = 42,904.80 : x
  2. Step 2: Convert to fraction form
    87,314.40/130,885.20 = 42,904.80/x
  3. Step 3: Cross multiply
    87,314.40x = 130,885.20 × 42,904.80
  4. Step 4: Simplify right side
    87,314.40x = 5,615,603,328.96
  5. Step 5: Solve for x
    x = 5,615,603,328.96/87,314.40
  6. Step 6: Final answer
    x = 64,314.74

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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.