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Finding the Fourth Proportional to 70,555.86, 105,750.36 and 31,030.30

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Solution

The fourth proportional to 70,555.86, 105,750.36 and 31,030.30 is: 46,508.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,555.86 : 105,750.36 = 31,030.30 : x
  2. Step 2: Convert to fraction form
    70,555.86/105,750.36 = 31,030.30/x
  3. Step 3: Cross multiply
    70,555.86x = 105,750.36 × 31,030.30
  4. Step 4: Simplify right side
    70,555.86x = 3,281,465,395.91
  5. Step 5: Solve for x
    x = 3,281,465,395.91/70,555.86
  6. Step 6: Final answer
    x = 46,508.76

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1.5x scale

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.