Home / 98,779.81-136,316.48-53,457.78

Finding the Fourth Proportional to 98,779.81, 136,316.48 and 53,457.78

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Solution

The fourth proportional to 98,779.81, 136,316.48 and 53,457.78 is: 73,771.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,779.81 : 136,316.48 = 53,457.78 : x
  2. Step 2: Convert to fraction form
    98,779.81/136,316.48 = 53,457.78/x
  3. Step 3: Cross multiply
    98,779.81x = 136,316.48 × 53,457.78
  4. Step 4: Simplify right side
    98,779.81x = 7,287,176,398.21
  5. Step 5: Solve for x
    x = 7,287,176,398.21/98,779.81
  6. Step 6: Final answer
    x = 73,771.92

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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.