Home / 90,308.21-124,685.60-56,330.33

Finding the Fourth Proportional to 90,308.21, 124,685.60 and 56,330.33

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Solution

The fourth proportional to 90,308.21, 124,685.60 and 56,330.33 is: 77,773.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,308.21 : 124,685.60 = 56,330.33 : x
  2. Step 2: Convert to fraction form
    90,308.21/124,685.60 = 56,330.33/x
  3. Step 3: Cross multiply
    90,308.21x = 124,685.60 × 56,330.33
  4. Step 4: Simplify right side
    90,308.21x = 7,023,580,089.17
  5. Step 5: Solve for x
    x = 7,023,580,089.17/90,308.21
  6. Step 6: Final answer
    x = 77,773.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.