Home / 91,008.10-136,475.70-31,813.30

Finding the Fourth Proportional to 91,008.10, 136,475.70 and 31,813.30

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Solution

The fourth proportional to 91,008.10, 136,475.70 and 31,813.30 is: 47,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,008.10 : 136,475.70 = 31,813.30 : x
  2. Step 2: Convert to fraction form
    91,008.10/136,475.70 = 31,813.30/x
  3. Step 3: Cross multiply
    91,008.10x = 136,475.70 × 31,813.30
  4. Step 4: Simplify right side
    91,008.10x = 4,341,742,386.81
  5. Step 5: Solve for x
    x = 4,341,742,386.81/91,008.10
  6. Step 6: Final answer
    x = 47,707.21

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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.