Home / 98,538.48-135,984-56,099.76

Finding the Fourth Proportional to 98,538.48, 135,984 and 56,099.76

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Solution

The fourth proportional to 98,538.48, 135,984 and 56,099.76 is: 77,418.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,538.48 : 135,984 = 56,099.76 : x
  2. Step 2: Convert to fraction form
    98,538.48/135,984 = 56,099.76/x
  3. Step 3: Cross multiply
    98,538.48x = 135,984 × 56,099.76
  4. Step 4: Simplify right side
    98,538.48x = 7,628,669,763.84
  5. Step 5: Solve for x
    x = 7,628,669,763.84/98,538.48
  6. Step 6: Final answer
    x = 77,418.18

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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.