Home / 85,133.70-127,663.02-31,804.92

Finding the Fourth Proportional to 85,133.70, 127,663.02 and 31,804.92

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Solution

The fourth proportional to 85,133.70, 127,663.02 and 31,804.92 is: 47,693.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,133.70 : 127,663.02 = 31,804.92 : x
  2. Step 2: Convert to fraction form
    85,133.70/127,663.02 = 31,804.92/x
  3. Step 3: Cross multiply
    85,133.70x = 127,663.02 × 31,804.92
  4. Step 4: Simplify right side
    85,133.70x = 4,060,312,138.06
  5. Step 5: Solve for x
    x = 4,060,312,138.06/85,133.70
  6. Step 6: Final answer
    x = 47,693.36

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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.