Home / 76,239.18-105,208.47-42,247.35

Finding the Fourth Proportional to 76,239.18, 105,208.47 and 42,247.35

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Solution

The fourth proportional to 76,239.18, 105,208.47 and 42,247.35 is: 58,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,239.18 : 105,208.47 = 42,247.35 : x
  2. Step 2: Convert to fraction form
    76,239.18/105,208.47 = 42,247.35/x
  3. Step 3: Cross multiply
    76,239.18x = 105,208.47 × 42,247.35
  4. Step 4: Simplify right side
    76,239.18x = 4,444,779,055.05
  5. Step 5: Solve for x
    x = 4,444,779,055.05/76,239.18
  6. Step 6: Final answer
    x = 58,300.46

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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.