Home / 74,678.88-103,056.06-42,852.78

Finding the Fourth Proportional to 74,678.88, 103,056.06 and 42,852.78

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Solution

The fourth proportional to 74,678.88, 103,056.06 and 42,852.78 is: 59,136.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,678.88 : 103,056.06 = 42,852.78 : x
  2. Step 2: Convert to fraction form
    74,678.88/103,056.06 = 42,852.78/x
  3. Step 3: Cross multiply
    74,678.88x = 103,056.06 × 42,852.78
  4. Step 4: Simplify right side
    74,678.88x = 4,416,238,666.85
  5. Step 5: Solve for x
    x = 4,416,238,666.85/74,678.88
  6. Step 6: Final answer
    x = 59,136.38

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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.