Home / 90,460.40-135,666.30-31,314.20

Finding the Fourth Proportional to 90,460.40, 135,666.30 and 31,314.20

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Solution

The fourth proportional to 90,460.40, 135,666.30 and 31,314.20 is: 46,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,460.40 : 135,666.30 = 31,314.20 : x
  2. Step 2: Convert to fraction form
    90,460.40/135,666.30 = 31,314.20/x
  3. Step 3: Cross multiply
    90,460.40x = 135,666.30 × 31,314.20
  4. Step 4: Simplify right side
    90,460.40x = 4,248,281,651.46
  5. Step 5: Solve for x
    x = 4,248,281,651.46/90,460.40
  6. Step 6: Final answer
    x = 46,962.89

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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.