Home / 98,031.89-135,263.30-64,090.05

Finding the Fourth Proportional to 98,031.89, 135,263.30 and 64,090.05

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Solution

The fourth proportional to 98,031.89, 135,263.30 and 64,090.05 is: 88,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,031.89 : 135,263.30 = 64,090.05 : x
  2. Step 2: Convert to fraction form
    98,031.89/135,263.30 = 64,090.05/x
  3. Step 3: Cross multiply
    98,031.89x = 135,263.30 × 64,090.05
  4. Step 4: Simplify right side
    98,031.89x = 8,669,031,339.71
  5. Step 5: Solve for x
    x = 8,669,031,339.71/98,031.89
  6. Step 6: Final answer
    x = 88,430.73

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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.