Home / 76,130.99-105,052.55-42,134.07

Finding the Fourth Proportional to 76,130.99, 105,052.55 and 42,134.07

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Solution

The fourth proportional to 76,130.99, 105,052.55 and 42,134.07 is: 58,140.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,130.99 : 105,052.55 = 42,134.07 : x
  2. Step 2: Convert to fraction form
    76,130.99/105,052.55 = 42,134.07/x
  3. Step 3: Cross multiply
    76,130.99x = 105,052.55 × 42,134.07
  4. Step 4: Simplify right side
    76,130.99x = 4,426,291,678.66
  5. Step 5: Solve for x
    x = 4,426,291,678.66/76,130.99
  6. Step 6: Final answer
    x = 58,140.47

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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.