Home / 98,031.48-135,259.86-57,742.08

Finding the Fourth Proportional to 98,031.48, 135,259.86 and 57,742.08

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Solution

The fourth proportional to 98,031.48, 135,259.86 and 57,742.08 is: 79,670.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,031.48 : 135,259.86 = 57,742.08 : x
  2. Step 2: Convert to fraction form
    98,031.48/135,259.86 = 57,742.08/x
  3. Step 3: Cross multiply
    98,031.48x = 135,259.86 × 57,742.08
  4. Step 4: Simplify right side
    98,031.48x = 7,810,185,656.91
  5. Step 5: Solve for x
    x = 7,810,185,656.91/98,031.48
  6. Step 6: Final answer
    x = 79,670.18

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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.