Home / 40,931.80-61,397.70-31,090.30

Finding the Fourth Proportional to 40,931.80, 61,397.70 and 31,090.30

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Solution

The fourth proportional to 40,931.80, 61,397.70 and 31,090.30 is: 46,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,931.80 : 61,397.70 = 31,090.30 : x
  2. Step 2: Convert to fraction form
    40,931.80/61,397.70 = 31,090.30/x
  3. Step 3: Cross multiply
    40,931.80x = 61,397.70 × 31,090.30
  4. Step 4: Simplify right side
    40,931.80x = 1,908,872,912.31
  5. Step 5: Solve for x
    x = 1,908,872,912.31/40,931.80
  6. Step 6: Final answer
    x = 46,635.45

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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.