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Finding the Fourth Proportional to 76,840.63, 106,041.95 and 42,848.79

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Solution

The fourth proportional to 76,840.63, 106,041.95 and 42,848.79 is: 59,132.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,840.63 : 106,041.95 = 42,848.79 : x
  2. Step 2: Convert to fraction form
    76,840.63/106,041.95 = 42,848.79/x
  3. Step 3: Cross multiply
    76,840.63x = 106,041.95 × 42,848.79
  4. Step 4: Simplify right side
    76,840.63x = 4,543,769,246.74
  5. Step 5: Solve for x
    x = 4,543,769,246.74/76,840.63
  6. Step 6: Final answer
    x = 59,132.38

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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.