Home / 78,979.08-118,501.56-34,637.70

Finding the Fourth Proportional to 78,979.08, 118,501.56 and 34,637.70

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Solution

The fourth proportional to 78,979.08, 118,501.56 and 34,637.70 is: 51,971.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,979.08 : 118,501.56 = 34,637.70 : x
  2. Step 2: Convert to fraction form
    78,979.08/118,501.56 = 34,637.70/x
  3. Step 3: Cross multiply
    78,979.08x = 118,501.56 × 34,637.70
  4. Step 4: Simplify right side
    78,979.08x = 4,104,621,484.81
  5. Step 5: Solve for x
    x = 4,104,621,484.81/78,979.08
  6. Step 6: Final answer
    x = 51,971.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.