Home / 85,921.77-128,851.90-29,746.80

Finding the Fourth Proportional to 85,921.77, 128,851.90 and 29,746.80

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Solution

The fourth proportional to 85,921.77, 128,851.90 and 29,746.80 is: 44,609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,921.77 : 128,851.90 = 29,746.80 : x
  2. Step 2: Convert to fraction form
    85,921.77/128,851.90 = 29,746.80/x
  3. Step 3: Cross multiply
    85,921.77x = 128,851.90 × 29,746.80
  4. Step 4: Simplify right side
    85,921.77x = 3,832,931,252.91
  5. Step 5: Solve for x
    x = 3,832,931,252.91/85,921.77
  6. Step 6: Final answer
    x = 44,609.55

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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.