Home / 85,038.60-127,560-40,670.04

Finding the Fourth Proportional to 85,038.60, 127,560 and 40,670.04

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Solution

The fourth proportional to 85,038.60, 127,560 and 40,670.04 is: 61,006.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,038.60 : 127,560 = 40,670.04 : x
  2. Step 2: Convert to fraction form
    85,038.60/127,560 = 40,670.04/x
  3. Step 3: Cross multiply
    85,038.60x = 127,560 × 40,670.04
  4. Step 4: Simplify right side
    85,038.60x = 5,187,870,302.40
  5. Step 5: Solve for x
    x = 5,187,870,302.40/85,038.60
  6. Step 6: Final answer
    x = 61,006.06

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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.