Home / 85,905.48-128,826.72-29,731.08

Finding the Fourth Proportional to 85,905.48, 128,826.72 and 29,731.08

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Solution

The fourth proportional to 85,905.48, 128,826.72 and 29,731.08 is: 44,585.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,905.48 : 128,826.72 = 29,731.08 : x
  2. Step 2: Convert to fraction form
    85,905.48/128,826.72 = 29,731.08/x
  3. Step 3: Cross multiply
    85,905.48x = 128,826.72 × 29,731.08
  4. Step 4: Simplify right side
    85,905.48x = 3,830,157,518.46
  5. Step 5: Solve for x
    x = 3,830,157,518.46/85,905.48
  6. Step 6: Final answer
    x = 44,585.72

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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.