Home / 70,420.36-97,178.42-38,587.72

Finding the Fourth Proportional to 70,420.36, 97,178.42 and 38,587.72

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Solution

The fourth proportional to 70,420.36, 97,178.42 and 38,587.72 is: 53,250.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,420.36 : 97,178.42 = 38,587.72 : x
  2. Step 2: Convert to fraction form
    70,420.36/97,178.42 = 38,587.72/x
  3. Step 3: Cross multiply
    70,420.36x = 97,178.42 × 38,587.72
  4. Step 4: Simplify right side
    70,420.36x = 3,749,893,661.00
  5. Step 5: Solve for x
    x = 3,749,893,661.00/70,420.36
  6. Step 6: Final answer
    x = 53,250.13

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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.