Home / 90,109.98-124,346.43-49,820.58

Finding the Fourth Proportional to 90,109.98, 124,346.43 and 49,820.58

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Solution

The fourth proportional to 90,109.98, 124,346.43 and 49,820.58 is: 68,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,109.98 : 124,346.43 = 49,820.58 : x
  2. Step 2: Convert to fraction form
    90,109.98/124,346.43 = 49,820.58/x
  3. Step 3: Cross multiply
    90,109.98x = 124,346.43 × 49,820.58
  4. Step 4: Simplify right side
    90,109.98x = 6,195,011,263.53
  5. Step 5: Solve for x
    x = 6,195,011,263.53/90,109.98
  6. Step 6: Final answer
    x = 68,749.45

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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.