Home / 85,810.50-128,565.63-59,531.94

Finding the Fourth Proportional to 85,810.50, 128,565.63 and 59,531.94

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Solution

The fourth proportional to 85,810.50, 128,565.63 and 59,531.94 is: 89,193.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,810.50 : 128,565.63 = 59,531.94 : x
  2. Step 2: Convert to fraction form
    85,810.50/128,565.63 = 59,531.94/x
  3. Step 3: Cross multiply
    85,810.50x = 128,565.63 × 59,531.94
  4. Step 4: Simplify right side
    85,810.50x = 7,653,761,371.22
  5. Step 5: Solve for x
    x = 7,653,761,371.22/85,810.50
  6. Step 6: Final answer
    x = 89,193.76

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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.