Home / 85,541.29-128,312.15-23,211.79

Finding the Fourth Proportional to 85,541.29, 128,312.15 and 23,211.79

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Solution

The fourth proportional to 85,541.29, 128,312.15 and 23,211.79 is: 34,817.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,541.29 : 128,312.15 = 23,211.79 : x
  2. Step 2: Convert to fraction form
    85,541.29/128,312.15 = 23,211.79/x
  3. Step 3: Cross multiply
    85,541.29x = 128,312.15 × 23,211.79
  4. Step 4: Simplify right side
    85,541.29x = 2,978,354,243.41
  5. Step 5: Solve for x
    x = 2,978,354,243.41/85,541.29
  6. Step 6: Final answer
    x = 34,817.74

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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.