Home / 78,248.63-117,389.66-31,501.51

Finding the Fourth Proportional to 78,248.63, 117,389.66 and 31,501.51

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Solution

The fourth proportional to 78,248.63, 117,389.66 and 31,501.51 is: 47,258.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,248.63 : 117,389.66 = 31,501.51 : x
  2. Step 2: Convert to fraction form
    78,248.63/117,389.66 = 31,501.51/x
  3. Step 3: Cross multiply
    78,248.63x = 117,389.66 × 31,501.51
  4. Step 4: Simplify right side
    78,248.63x = 3,697,951,097.40
  5. Step 5: Solve for x
    x = 3,697,951,097.40/78,248.63
  6. Step 6: Final answer
    x = 47,258.99

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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.