Home / 85,929.28-128,893.68-48,472.35

Finding the Fourth Proportional to 85,929.28, 128,893.68 and 48,472.35

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Solution

The fourth proportional to 85,929.28, 128,893.68 and 48,472.35 is: 72,708.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,929.28 : 128,893.68 = 48,472.35 : x
  2. Step 2: Convert to fraction form
    85,929.28/128,893.68 = 48,472.35/x
  3. Step 3: Cross multiply
    85,929.28x = 128,893.68 × 48,472.35
  4. Step 4: Simplify right side
    85,929.28x = 6,247,779,569.75
  5. Step 5: Solve for x
    x = 6,247,779,569.75/85,929.28
  6. Step 6: Final answer
    x = 72,708.39

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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.