Home / 77,663.04-107,032.84-56,405.40

Finding the Fourth Proportional to 77,663.04, 107,032.84 and 56,405.40

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Solution

The fourth proportional to 77,663.04, 107,032.84 and 56,405.40 is: 77,736.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,663.04 : 107,032.84 = 56,405.40 : x
  2. Step 2: Convert to fraction form
    77,663.04/107,032.84 = 56,405.40/x
  3. Step 3: Cross multiply
    77,663.04x = 107,032.84 × 56,405.40
  4. Step 4: Simplify right side
    77,663.04x = 6,037,230,153.34
  5. Step 5: Solve for x
    x = 6,037,230,153.34/77,663.04
  6. Step 6: Final answer
    x = 77,736.21

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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.