Home / 77,970.21-107,598.95-42,160.24

Finding the Fourth Proportional to 77,970.21, 107,598.95 and 42,160.24

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Solution

The fourth proportional to 77,970.21, 107,598.95 and 42,160.24 is: 58,181.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,970.21 : 107,598.95 = 42,160.24 : x
  2. Step 2: Convert to fraction form
    77,970.21/107,598.95 = 42,160.24/x
  3. Step 3: Cross multiply
    77,970.21x = 107,598.95 × 42,160.24
  4. Step 4: Simplify right side
    77,970.21x = 4,536,397,555.75
  5. Step 5: Solve for x
    x = 4,536,397,555.75/77,970.21
  6. Step 6: Final answer
    x = 58,181.16

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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.