Home / 70,955.20-97,918.38-39,123.40

Finding the Fourth Proportional to 70,955.20, 97,918.38 and 39,123.40

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Solution

The fourth proportional to 70,955.20, 97,918.38 and 39,123.40 is: 53,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,955.20 : 97,918.38 = 39,123.40 : x
  2. Step 2: Convert to fraction form
    70,955.20/97,918.38 = 39,123.40/x
  3. Step 3: Cross multiply
    70,955.20x = 97,918.38 × 39,123.40
  4. Step 4: Simplify right side
    70,955.20x = 3,830,899,948.09
  5. Step 5: Solve for x
    x = 3,830,899,948.09/70,955.20
  6. Step 6: Final answer
    x = 53,990.40

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1.5x scale

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.