Home / 98,518.48-135,956.40-56,079.76

Finding the Fourth Proportional to 98,518.48, 135,956.40 and 56,079.76

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Solution

The fourth proportional to 98,518.48, 135,956.40 and 56,079.76 is: 77,390.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,518.48 : 135,956.40 = 56,079.76 : x
  2. Step 2: Convert to fraction form
    98,518.48/135,956.40 = 56,079.76/x
  3. Step 3: Cross multiply
    98,518.48x = 135,956.40 × 56,079.76
  4. Step 4: Simplify right side
    98,518.48x = 7,624,402,282.46
  5. Step 5: Solve for x
    x = 7,624,402,282.46/98,518.48
  6. Step 6: Final answer
    x = 77,390.58

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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.