Home / 66,442.32-99,662.40-31,407.12

Finding the Fourth Proportional to 66,442.32, 99,662.40 and 31,407.12

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Solution

The fourth proportional to 66,442.32, 99,662.40 and 31,407.12 is: 47,110.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442.32 : 99,662.40 = 31,407.12 : x
  2. Step 2: Convert to fraction form
    66,442.32/99,662.40 = 31,407.12/x
  3. Step 3: Cross multiply
    66,442.32x = 99,662.40 × 31,407.12
  4. Step 4: Simplify right side
    66,442.32x = 3,130,108,956.29
  5. Step 5: Solve for x
    x = 3,130,108,956.29/66,442.32
  6. Step 6: Final answer
    x = 47,110.17

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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.