Home / 70,985.16-97,959.31-38,719.76

Finding the Fourth Proportional to 70,985.16, 97,959.31 and 38,719.76

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Solution

The fourth proportional to 70,985.16, 97,959.31 and 38,719.76 is: 53,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,985.16 : 97,959.31 = 38,719.76 : x
  2. Step 2: Convert to fraction form
    70,985.16/97,959.31 = 38,719.76/x
  3. Step 3: Cross multiply
    70,985.16x = 97,959.31 × 38,719.76
  4. Step 4: Simplify right side
    70,985.16x = 3,792,960,386.37
  5. Step 5: Solve for x
    x = 3,792,960,386.37/70,985.16
  6. Step 6: Final answer
    x = 53,433.15

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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.