Home / 51,707.40-71,356.88-30,485.40

Finding the Fourth Proportional to 51,707.40, 71,356.88 and 30,485.40

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Solution

The fourth proportional to 51,707.40, 71,356.88 and 30,485.40 is: 42,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,707.40 : 71,356.88 = 30,485.40 : x
  2. Step 2: Convert to fraction form
    51,707.40/71,356.88 = 30,485.40/x
  3. Step 3: Cross multiply
    51,707.40x = 71,356.88 × 30,485.40
  4. Step 4: Simplify right side
    51,707.40x = 2,175,343,029.55
  5. Step 5: Solve for x
    x = 2,175,343,029.55/51,707.40
  6. Step 6: Final answer
    x = 42,070.25

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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.