Home / 90,702.40-136,052.64-28,373.44

Finding the Fourth Proportional to 90,702.40, 136,052.64 and 28,373.44

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Solution

The fourth proportional to 90,702.40, 136,052.64 and 28,373.44 is: 42,559.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,702.40 : 136,052.64 = 28,373.44 : x
  2. Step 2: Convert to fraction form
    90,702.40/136,052.64 = 28,373.44/x
  3. Step 3: Cross multiply
    90,702.40x = 136,052.64 × 28,373.44
  4. Step 4: Simplify right side
    90,702.40x = 3,860,281,417.88
  5. Step 5: Solve for x
    x = 3,860,281,417.88/90,702.40
  6. Step 6: Final answer
    x = 42,559.86

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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.