Home / 86,648.40-129,973.32-30,488.94

Finding the Fourth Proportional to 86,648.40, 129,973.32 and 30,488.94

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Solution

The fourth proportional to 86,648.40, 129,973.32 and 30,488.94 is: 45,733.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,648.40 : 129,973.32 = 30,488.94 : x
  2. Step 2: Convert to fraction form
    86,648.40/129,973.32 = 30,488.94/x
  3. Step 3: Cross multiply
    86,648.40x = 129,973.32 × 30,488.94
  4. Step 4: Simplify right side
    86,648.40x = 3,962,748,755.08
  5. Step 5: Solve for x
    x = 3,962,748,755.08/86,648.40
  6. Step 6: Final answer
    x = 45,733.66

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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.