Home / 85,501.40-128,252.10-35,564.90

Finding the Fourth Proportional to 85,501.40, 128,252.10 and 35,564.90

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Solution

The fourth proportional to 85,501.40, 128,252.10 and 35,564.90 is: 53,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.40 : 128,252.10 = 35,564.90 : x
  2. Step 2: Convert to fraction form
    85,501.40/128,252.10 = 35,564.90/x
  3. Step 3: Cross multiply
    85,501.40x = 128,252.10 × 35,564.90
  4. Step 4: Simplify right side
    85,501.40x = 4,561,273,111.29
  5. Step 5: Solve for x
    x = 4,561,273,111.29/85,501.40
  6. Step 6: Final answer
    x = 53,347.35

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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.