Home / 78,915,173.87-108,898,547.10-43,630,939.06

Finding the Fourth Proportional to 78,915,173.87, 108,898,547.10 and 43,630,939.06

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Solution

The fourth proportional to 78,915,173.87, 108,898,547.10 and 43,630,939.06 is: 60,208,267.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,915,173.87 : 108,898,547.10 = 43,630,939.06 : x
  2. Step 2: Convert to fraction form
    78,915,173.87/108,898,547.10 = 43,630,939.06/x
  3. Step 3: Cross multiply
    78,915,173.87x = 108,898,547.10 × 43,630,939.06
  4. Step 4: Simplify right side
    78,915,173.87x = 4,751,345,871,698,147
  5. Step 5: Solve for x
    x = 4,751,345,871,698,147/78,915,173.87
  6. Step 6: Final answer
    x = 60,208,267.16

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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.