Home / 90,780.64-136,045.88-46,314.48

Finding the Fourth Proportional to 90,780.64, 136,045.88 and 46,314.48

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Solution

The fourth proportional to 90,780.64, 136,045.88 and 46,314.48 is: 69,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,780.64 : 136,045.88 = 46,314.48 : x
  2. Step 2: Convert to fraction form
    90,780.64/136,045.88 = 46,314.48/x
  3. Step 3: Cross multiply
    90,780.64x = 136,045.88 × 46,314.48
  4. Step 4: Simplify right side
    90,780.64x = 6,300,894,188.34
  5. Step 5: Solve for x
    x = 6,300,894,188.34/90,780.64
  6. Step 6: Final answer
    x = 69,407.91

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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.