Home / 30,970.76-42,743.23-29,070.70

Finding the Fourth Proportional to 30,970.76, 42,743.23 and 29,070.70

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Solution

The fourth proportional to 30,970.76, 42,743.23 and 29,070.70 is: 40,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,970.76 : 42,743.23 = 29,070.70 : x
  2. Step 2: Convert to fraction form
    30,970.76/42,743.23 = 29,070.70/x
  3. Step 3: Cross multiply
    30,970.76x = 42,743.23 × 29,070.70
  4. Step 4: Simplify right side
    30,970.76x = 1,242,575,436.83
  5. Step 5: Solve for x
    x = 1,242,575,436.83/30,970.76
  6. Step 6: Final answer
    x = 40,120.93

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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.