Home / 72,038.69-99,413.51-40,207.58

Finding the Fourth Proportional to 72,038.69, 99,413.51 and 40,207.58

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Solution

The fourth proportional to 72,038.69, 99,413.51 and 40,207.58 is: 55,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,038.69 : 99,413.51 = 40,207.58 : x
  2. Step 2: Convert to fraction form
    72,038.69/99,413.51 = 40,207.58/x
  3. Step 3: Cross multiply
    72,038.69x = 99,413.51 × 40,207.58
  4. Step 4: Simplify right side
    72,038.69x = 3,997,175,958.30
  5. Step 5: Solve for x
    x = 3,997,175,958.30/72,038.69
  6. Step 6: Final answer
    x = 55,486.52

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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.