Home / 90,615.16-124,903.48-61,534.40

Finding the Fourth Proportional to 90,615.16, 124,903.48 and 61,534.40

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Solution

The fourth proportional to 90,615.16, 124,903.48 and 61,534.40 is: 84,818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,615.16 : 124,903.48 = 61,534.40 : x
  2. Step 2: Convert to fraction form
    90,615.16/124,903.48 = 61,534.40/x
  3. Step 3: Cross multiply
    90,615.16x = 124,903.48 × 61,534.40
  4. Step 4: Simplify right side
    90,615.16x = 7,685,860,699.71
  5. Step 5: Solve for x
    x = 7,685,860,699.71/90,615.16
  6. Step 6: Final answer
    x = 84,818.71

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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.