Home / 42,768,015.40-64,152,023.10-31,430,607.40

Finding the Fourth Proportional to 42,768,015.40, 64,152,023.10 and 31,430,607.40

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Solution

The fourth proportional to 42,768,015.40, 64,152,023.10 and 31,430,607.40 is: 47,145,911.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,015.40 : 64,152,023.10 = 31,430,607.40 : x
  2. Step 2: Convert to fraction form
    42,768,015.40/64,152,023.10 = 31,430,607.40/x
  3. Step 3: Cross multiply
    42,768,015.40x = 64,152,023.10 × 31,430,607.40
  4. Step 4: Simplify right side
    42,768,015.40x = 2,016,337,051,971,831
  5. Step 5: Solve for x
    x = 2,016,337,051,971,831/42,768,015.40
  6. Step 6: Final answer
    x = 47,145,911.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.