Home / 76,438.93-105,482.18-42,449.58

Finding the Fourth Proportional to 76,438.93, 105,482.18 and 42,449.58

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Solution

The fourth proportional to 76,438.93, 105,482.18 and 42,449.58 is: 58,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,438.93 : 105,482.18 = 42,449.58 : x
  2. Step 2: Convert to fraction form
    76,438.93/105,482.18 = 42,449.58/x
  3. Step 3: Cross multiply
    76,438.93x = 105,482.18 × 42,449.58
  4. Step 4: Simplify right side
    76,438.93x = 4,477,674,238.48
  5. Step 5: Solve for x
    x = 4,477,674,238.48/76,438.93
  6. Step 6: Final answer
    x = 58,578.45

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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.